Developer
Hash Generator
Generate MD5, SHA-256, or SHA-512 hashes from input text for checksums and integrity checks.
Open tool
Free browser-based developer tools: format JSON, generate UUIDs, create QR codes, hash text with MD5/SHA256, encode/decode Base64 and URLs, decode JWTs, and format HTML, CSS, SQL. No signup.
For small technical jobs that interrupt bigger ones.
Start here
Format, validate, and prettify JSON in your browser. Paste messy API responses and get clean structured output.
Generate MD5, SHA-256, or SHA-512 hashes from input text for checksums and integrity checks.
Open toolGenerate random UUID v4 identifiers in single or bulk mode for databases and API identifiers.
Open toolCreate QR codes from URLs, WiFi credentials, contact cards, or text and download as PNG or SVG.
Open toolThe rest of the bench
12 more focused utilities
Decode JWT headers and payloads to inspect token claims quickly during auth debugging.
Open toolEncode URL-unsafe characters or decode encoded URLs for debugging links, API calls, and query strings.
Open toolBeautify or minify HTML with consistent indentation for cleaner templates and easier debugging.
Open toolFormat CSS with proper spacing and indentation, including minified production CSS you need to inspect.
Open toolTest regular expressions against sample text with live match feedback while iterating patterns quickly.
Open toolPrettify complex SQL queries with readable indentation and keyword capitalization for faster review.
Open toolGenerate strong random passwords with custom length and symbol rules, plus one-click copy.
Open toolCalculate proportional dimensions for images, videos, and screens by entering any two ratio values.
Open toolConvert Markdown to clean HTML with a live preview for docs, blog posts, and README workflows.
Open toolConvert colors between HEX, RGB, HSL, HSV, and CMYK with a live swatch preview.
Open toolConvert pasted CSV or uploaded CSV files into structured JSON arrays for APIs and automation scripts.
Open toolLook up public domain registration details including registrar, nameservers, and key domain dates.
Open tool